Allow application continue running when iPhone gets locked

Question

I have developed an iPhone app which gets the microphone recorder inputs every second using NSTimer, calculate the amplitude of sound, and take appropriate action if required. I have noticed that when my iPhone gets locked, my application stops running(it doesn't fire the timer callback function). When I unlock iPhone, it start automatically. Could anyone please tell me how can I allow application responding when iPhone gets locked? Is there any other way around such that iPhone shouldn't get locked when my application is running? What should be Apple's recomendation on this?

I found this article but not sure it is correct way to do.

Thanks.

Answer 1

You cannot prevent timer from being stopped when application goes into idle state. Only one possible way is to disable idleTimer of the application.

application.idleTimerDisabled = TRUE; 
    //or

//Disable screen dimming if no user input occur on device.
[[UIApplication sharedApplication] setIdleTimerDisabled:YES];